How to change color of ListView items on focus and on click

i have a list View in my app (this is the xml layout):

   <?xml version="1.0" encoding="utf-8"?>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
       android:id="@+id/arrayList"
       android:layout_width="fill_parent"
android:layout_height="fill_parent"
       android:textFilterEnabled="true"
       android:scrollbars="vertical"
       android:drawSelectorOnTop="true">
</ListView>

Each item of my list View is composed of two TextView:

    <?xml version="1.0" encoding="utf-8"?>
<TableLayout android:layout_width="fill_parent"
       xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/row_container"
       android:padding="5px" android:layout_height="wrap_content"
       android:background="@color/white" android:shrinkColumns="0">
               <TableRow>
               <TextView android:layout_height="wrap_content"
                       android:layout_width="wrap_content" android:layout_below="@+id/
description"
                       android:id="@+id/description"
                       android:textColor="@color/black"
                       android:scrollHorizontally="true"
                       android:singleLine="true"></TextView>
       </TableRow>
       <TableRow>
               <TextView android:layout_width="wrap_content"
                       android:layout_height="wrap_content" android:id="@+id/result"
                       android:textColor="@color/grey"
                       android:maxLines="1"
                       android:scrollHorizontally="true"></TextView>
       </TableRow>

</TableLayout>

I'm populating my listView from an ArrayAdapter, in this way:

public class Matches extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInsta